I have a forecast spreadsheet with columns listing potential incoming sales for the month. I want to be able to click on a cell, change it's color to green and have it be included in the total below. I have looked at the thread on this website on this subject but it is of no help (mainly because I don't understand it). If someone could offer me a very basic yet detailed way to do this, I would be most grateful. Thanks very much and Happy Holidays.